Write a function to compute the sum of the series S1 given as: S1 = 1 - 1/2 + 1/3 - 1/4 + 1/5 - 1/6 + 1/7 - 1/8 + 1/9 - 1/10 ....... plusminus 1/N where, N is an odd positive integer: for the last term take (+) if N is odd and (-) if N is even The function should have one input N and one output S1. Make use of for_loop and if_statement. Name your function as LastName_HW6_Part1. In the command window, test your function for N = 15 and N = 105. Copy and paste the command window results into your function as comments